Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:





MnDetails
81513319
Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime
No factors below 276
TF target 275
P-1
B1 = 650000
B2 = 12675000
LL
StatusDateUserResidueShiftSoftware
Unverified2017-08-20curtiscFAB5365A54035B__11983540Windows Service,Prime95,v28.7,build 1
History
DateUserTypeResult
2017-08-20curtiscC-LLFAB5365A54035B__
2016-11-21Judge HaleNF-PM1B1=650000, B2=12675000, E=12
2016-11-11dh1NFno factor TF: 75-76
2016-11-11Mark RoseNFno factor TF: 74-75
2016-11-08Brian BeuningNFno factor TF: 73-74
2016-10-02Judge HaleNFno factor TF: 72-73
2016-10-02Judge HaleNFno factor TF: 71-72
2011-02-22UngelovendeNFno factor TF: 70-71
2011-02-22UngelovendeNFno factor TF: 69-70
2011-02-22UngelovendeNFno factor TF: 68-69
2011-02-22UngelovendeNFno factor TF: 67-68
2011-02-22UngelovendeNFno factor TF: 65-67
2010-12-08Architects CubedNFno factor TF: 64-65